Note that I never used Authenticator and I always use different computers to log in.
However in Patch 1.0.4, my account is always locked when I get to the Authenticating Credentials loading part. And it told me to Unlock from Website.
After unlocking from battlenet website, and the same thing happens again. The account is again locked when it is on the Authenticating Credentials loading part.
I unlocked 3 times and relaunched diablo 3, doesn't really work. It always blocks me on that certain loading part. And always asks me to unlock from website. Nothing more to do.
So currently I cannot log in to my account in D3.